Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

[ruff] Implement mutable-fromkeys-value (RUF024) #9597

Merged
merged 4 commits into from Jan 22, 2024

Conversation

tjkuson
Copy link
Contributor

@tjkuson tjkuson commented Jan 21, 2024

Summary

Implement rule mutable-fromkeys-value (RUF023).

Autofixes

dict.fromkeys(foo, [])

to

{key: [] for key in foo}

The fix is marked as unsafe as it changes runtime behaviour. It also uses key as the comprehension variable, which may not always be desired.

Closes #4613.

Test Plan

cargo test

Implement rule `mutable-fromkeys-value` (`RUF023`) with a fix marked as
unsafe.

Fix formatting in docs
@tjkuson tjkuson marked this pull request as ready for review January 21, 2024 15:20
Copy link
Contributor

github-actions bot commented Jan 21, 2024

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

@AlexWaygood
Copy link
Member

Could you maybe use RUF024 for this? I'm using RUF023 for #9564 :)

@tjkuson
Copy link
Contributor Author

tjkuson commented Jan 21, 2024

Oops, I will change it when I am back at my desk

@Skylion007
Copy link

Can you also open an issue on this for flake8-bugbear? I'm sure they'd love to include this rule and it would make more sense with a reserved B error code. Other ruff rule suggestions have been added there and we usually migrate the rule alias.

@Skylion007
Copy link

Ah nvm, there is an issue that has been open for a while: PyCQA/flake8-bugbear#387

@AlexWaygood AlexWaygood changed the title Implement rule mutable-fromkeys-value (RUF023) Implement rule mutable-fromkeys-value (RUF024) Jan 21, 2024
@tjkuson
Copy link
Contributor Author

tjkuson commented Jan 21, 2024

Thanks for renaming the PR @AlexWaygood, didn't realise I had missed that

@charliermarsh charliermarsh self-requested a review January 21, 2024 20:34
Copy link
Member

@charliermarsh charliermarsh left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Excellent work, thank you.

@charliermarsh charliermarsh enabled auto-merge (squash) January 22, 2024 00:10
@charliermarsh charliermarsh added rule Implementing or modifying a lint rule preview Related to preview mode features labels Jan 22, 2024
@charliermarsh charliermarsh changed the title Implement rule mutable-fromkeys-value (RUF024) [ruff] Implement mutable-fromkeys-value (RUF024) Jan 22, 2024
@charliermarsh charliermarsh enabled auto-merge (squash) January 22, 2024 00:10
@charliermarsh charliermarsh merged commit 1e4b421 into astral-sh:main Jan 22, 2024
16 checks passed
@tjkuson tjkuson deleted the mutable-fromkeys-value branch January 22, 2024 09:35
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
preview Related to preview mode features rule Implementing or modifying a lint rule
Projects
None yet
Development

Successfully merging this pull request may close these issues.

Warn about dict.fromkeys(keys, mutable)
4 participants